G aldol-3 Aldol Condensation CHEM354Pre-Prelab Questions 1. A student forgot to add the benzaldehyde to his Aldol reaction. Instead of isolating a solid, the student recovered a liquid with a boiling point range of 129o-130oC. The ir showed both a carbonyl and a double bond. The 1H-NMR exhibited a 1H multiplet centered at 5.8 ppm, a 3H singlet at 2.4 ppm, and a 6H broad singlet at 2.1 ppm. Propose a structure for this product and write a mechanism for its formation.

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

What is the mass of 0.46 mil of mgcl2

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car